Multifunctional machine

Abstract

The invention relates to the technical field of mechanical transmission, and discloses a multifunctional machine, a motor output shaft, an eccentric transmission piece, a power output shaft and a cutting piece of the multifunctional machine jointly form a power transmission assembly, and in the power transmission assembly, a clutch mechanism is arranged between a cutting part of the cutting piece and the motor output shaft; when the power transmission assembly is in a normal working state, the cutting part of the cutting piece is rigidly connected with the output shaft of the motor, and when the power transmission assembly is in an overload protection state, rigid connection between the cutting part of the cutting piece and the output shaft of the motor is released. The clutch mechanism is configured to enable the power transmission assembly to be switched between the normal working state and the overload protection state according to the magnitude of the load transmitted to the output shaft of the motor by the cutting part, so that the situation that the motor assembly is damaged due to the fact that the load is too large during operation of the multifunctional machine can be prevented, and then the service life of the whole multifunctional machine is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, in particular to a multifunctional machine. Background Art

[0002] The multi-function machine is also called an oscillating machine. Its main function is to drive the saw blade to swing back and forth through a motor to achieve cutting of the target object.

[0003] However, when the load transmitted by the saw blade to the motor is too large, the motor is easily damaged, for example, the motor shaft is not strong enough to bear the load, or the motor burns out.

[0004] Therefore, how to prevent the motor of the multi-function machine from being damaged due to excessive load during operation, thereby ensuring the overall service life of the multi-function machine, has become a technical problem that needs to be urgently solved in this field. Summary of the invention

[0005] The purpose of the present invention is to at least solve the technical problem of how to prevent the motor of the multi-function machine from being damaged due to excessive load during operation, thereby ensuring the overall service life of the multi-function machine. This purpose is achieved through the following technical solutions:

[0006] The present invention proposes a multifunctional machine, comprising: a shell having an inner cavity; a motor assembly located in the inner cavity, the motor assembly comprising a motor body and a motor output shaft rotatable around its own axis, the motor output shaft extending along a first direction; an eccentric transmission member located in the inner cavity, the eccentric transmission member being connected to the motor output shaft, the eccentric transmission member being eccentrically arranged relative to the axis of the motor output shaft; a swing assembly comprising a power output shaft, the power output shaft extending along a second direction and connected to the eccentric transmission member, the second direction being perpendicular to the first direction, the power output shaft being configured to be able to swing back and forth on both sides of the axis of the motor output shaft driven by the motor output shaft and the eccentric transmission member; and a cutting member fixedly connected to the power output shaft, the cutting member having a cutting function. The cutting part is located outside the shell; wherein the motor output shaft, the eccentric transmission member, the power output shaft and the cutting member together constitute a power transmission component, and in the power transmission component, a clutch mechanism is also provided between the cutting part of the cutting member and the motor output shaft; the power transmission component has a normal working state and an overload protection state. When the power transmission component is in the normal working state, the cutting part of the cutting member is rigidly connected to the motor output shaft. When the power transmission component is in the overload protection state, the rigid connection between the cutting part of the cutting member and the motor output shaft is released, and the clutch mechanism is configured to switch the power transmission component between the normal working state and the overload protection state according to the size of the load transmitted by the cutting part to the motor output shaft.

[0007] When this multi-function machine is working normally, the motor assembly is started first to rotate the motor output shaft. Since the cutting part of the cutting piece is rigidly connected to the motor output shaft and under the action of the swing assembly, the power transmitted by the motor output shaft will be finally transmitted to the cutting part of the cutting piece along the power transmission assembly. Therefore, the cutting part can follow the power output shaft to swing back and forth on both sides of the axis of the motor output shaft to achieve cutting of the target object. At this time, the power transmission assembly is in a normal working state; when the load transmitted by the cutting part to the motor output shaft is too large, the clutch mechanism will switch the power transmission assembly to the overload protection state, that is, the rigid connection between the cutting part of the cutting piece and the motor output shaft is released, thereby preventing the motor assembly from being damaged due to excessive load during operation of the multi-function machine, thereby ensuring the overall service life of the multi-function machine.

[0008] In some embodiments of the present invention, the swing assembly also includes a connecting member extending along a first direction, and the two ends of the connecting member in the first direction are respectively a first connecting end and a second connecting end, the first connecting end is connected to the power output shaft, and the second connecting end is connected to the eccentric transmission member.

[0009] In some embodiments of the present invention, the power output shaft includes a shaft body extending along the second direction and a protruding portion protruding from the outer wall of the shaft body, the protruding portion is arranged around the circumference of the shaft body, and the protruding portion is provided with a protruding gear ring; the first connecting end is sleeved on the outer wall of the shaft body, the first connecting end is provided with a connecting gear ring, and the connecting gear ring and the protruding gear ring are spaced apart along the second direction; when the power transmission component is in a normal working state, the connecting gear ring is meshed with the protruding gear ring; when the power transmission component is in an overload protection state, the connecting gear ring is separated from the protruding gear ring.

[0010] In some embodiments of the present invention, the power output shaft also includes a first clutch spring, and the first clutch spring, the protruding gear ring and the connecting gear ring are arranged in sequence along the second direction, and the first clutch spring, the protruding gear ring and the connecting gear ring constitute a clutch mechanism; the first clutch spring is sleeved on the outer wall of the shaft body and can be retracted and retracted along the second direction, and along the second direction, one end of the first clutch spring close to the connecting gear ring is connected to the first connecting end, and the end of the first clutch spring away from the connecting gear ring is connected to the shaft body.

[0011] In some embodiments of the present invention, the first connecting end has a connecting hole for being sleeved on the outer wall of the shaft body, and an abutment platform is provided in the connecting hole. The abutment platform is circumferentially arranged around the inner wall of the connecting hole. Along the second direction, one end of the first clutch spring close to the connecting gear ring abuts against the abutment platform.

[0012] In some embodiments of the present invention, the second connecting end includes two clamping assemblies arranged at intervals along a third direction, and along the third direction, there is a clamping space between the two clamping assemblies for clamping the eccentric transmission member, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, and the eccentric transmission member and the two clamping assemblies constitute a clutch mechanism; the clamping assembly includes a clamping member and a second clutch spring, and the second clutch spring can be extended and retracted along the third direction; in any clamping assembly, along the third direction, one end of the second clutch spring is connected to the clamping member, and the other end of the second clutch spring is connected to the outer wall of the eccentric transmission member; when the power transmission assembly is in normal working state, the length of the two second clutch springs in the third direction remains unchanged; when the power transmission assembly is in overload protection state, both second clutch springs can be reciprocated and retracted along the third direction.

[0013] In some embodiments of the present invention, in any clamping assembly, the clamping member is provided with a mounting hole for installing a second clutch spring, the mounting hole extends along a third direction, and when the power transmission assembly is in normal working state, one end of the second clutch spring is located outside the mounting hole.

[0014] In some embodiments of the present invention, the cutting member includes a first member and a second member connected to the first member, the first member is connected to the power output shaft, the second member is located outside the shell, and the cutting portion is located at an end of the second member away from the first member.

[0015] In some embodiments of the present invention, the multifunction machine further comprises a battery, which is located in the inner cavity and is used to supply power to the motor assembly.

[0016] In some embodiments of the present invention, the battery is provided with a charging interface, and the housing is provided with a charging hole corresponding to the charging interface.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of the overall structure of a multi-function machine provided by an embodiment of the present invention;

[0020] Figure 2A schematic diagram of a portion of the structure of the multifunctional machine provided by an embodiment of the present invention after a portion of the housing is removed;

[0021] Figure 3 A cross-sectional view of a multifunctional machine provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a swing assembly in a multifunctional machine provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of a power output shaft in a multifunctional machine provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a connecting member in a multi-function machine provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the matching relationship between the connecting member and the eccentric transmission member in the multifunctional machine provided by an embodiment of the present invention;

[0026] Figure 8 A cross-sectional view of the matching relationship between a connecting member and an eccentric transmission member in a multi-function machine provided in an embodiment of the present invention.

[0027] The reference numerals are as follows:

[0028] 1. Multifunctional machine;

[0029] 10. Shell; 11. Inner cavity; 12. Charging port;

[0030] 20. Motor assembly; 21. Motor body; 22. Motor output shaft; 23. Connecting shaft;

[0031] 30. Eccentric transmission parts;

[0032] 40. Swing assembly; 41. Connecting member; 411. First connecting end; 4111. Connecting gear ring; 4112. Connecting hole; 41121. Abutting platform; 412. Second connecting end; 4121. Clamping assembly; 41211. Clamping member; 412111. Mounting hole; 41212. Second clutch spring; 42. Power output shaft; 421. Shaft body; 422. Protruding portion; 4221. Protruding gear ring; 423. First clutch spring; 424. Clamping portion;

[0033] 50, cutting piece; 51, first piece; 52, second piece; 521, cutting portion;

[0034] 60. Battery; 61. Charging port;

[0035] 71. head; 72. shaft;

[0036] 81. Compression nut; 82. Limiting retaining spring;

[0037] 91. Control component; 92. Power switch;

[0038] a. Clamping space. DETAILED DESCRIPTION

[0039] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0041] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0042] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0043] Figure 1 A schematic diagram of the overall structure of a multi-function machine provided by an embodiment of the present invention; Figure 2 A schematic diagram of a portion of the structure of the multifunctional machine provided by an embodiment of the present invention after a portion of the housing is removed; Figure 3 A cross-sectional view of a multifunctional machine provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a swing assembly in a multifunctional machine provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a power output shaft in a multifunctional machine provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a connecting member in a multifunctional machine provided by an embodiment of the present invention; Figures 1 to 6The embodiment of the present invention provides a multifunctional machine 1, comprising: a housing 10 having an inner cavity 11; a motor assembly 20, located in the inner cavity 11, the motor assembly 20 comprising a motor body 21 and a motor output shaft 22 rotatable around its own axis, the motor output shaft 22 extending along a first direction; an eccentric transmission member 30, located in the inner cavity 11, the eccentric transmission member 30 connected to the motor output shaft 22, the eccentric transmission member 30 being eccentrically arranged relative to the axis of the motor output shaft 22; a swing assembly 40, comprising a power output shaft 42, the power output shaft 42 extending along a second direction and connected to the eccentric transmission member 30, the second direction being perpendicular to the first direction, the power output shaft 42 being configured to be able to swing back and forth on both sides of the axis of the motor output shaft 22 driven by the motor output shaft 22 and the eccentric transmission member 30; and a cutting member 50, fixedly connected to the power output shaft 42, cutting The cutting piece 50 has a cutting portion 521, which is located outside the shell 10; wherein the motor output shaft 22, the eccentric transmission member 30, the power output shaft 42 and the cutting piece 50 together constitute a power transmission component, and in the power transmission component, a clutch mechanism is also provided between the cutting portion 521 of the cutting piece 50 and the motor output shaft 22; the power transmission component has a normal working state and an overload protection state. When the power transmission component is in the normal working state, the cutting portion 521 of the cutting piece 50 is rigidly connected to the motor output shaft 22. When the power transmission component is in the overload protection state, the rigid connection between the cutting portion 521 of the cutting piece 50 and the motor output shaft 22 is released, and the clutch mechanism is configured to be able to switch the power transmission component between the normal working state and the overload protection state according to the size of the load transmitted by the cutting portion 521 to the motor output shaft 22.

[0044] In this embodiment, when this multifunctional machine 1 is working normally, the motor assembly 20 is first started to rotate the motor output shaft 22. Since the cutting portion 521 of the cutting piece 50 is rigidly connected to the motor output shaft 22, and under the action of the swing assembly 40, the power transmitted by the motor output shaft 22 will be finally transmitted to the cutting portion 521 of the cutting piece 50 along the power transmission assembly. Therefore, the cutting portion 521 can follow the power output shaft 42 to swing back and forth on both sides of the axis of the motor output shaft 22 to achieve cutting of the target object. At this time, the power transmission assembly is in a normal working state; when the load transmitted by the cutting portion 521 to the motor output shaft 22 is too large, the clutch mechanism will switch the power transmission assembly to the overload protection state, that is, the rigid connection between the cutting portion 521 of the cutting piece 50 and the motor output shaft 22 is released.

[0045] Therefore, this multi-function machine 1, since it is provided with a clutch mechanism, when the multi-function machine 1 is under excessive load during operation, it can release the rigid connection between the cutting portion 521 of the cutting piece 50 and the motor output shaft 22, thereby preventing the motor output shaft 22 from breaking or even the motor assembly 20 from burning due to excessive load, thereby effectively ensuring the overall service life of the multi-function machine 1.

[0046] In addition, since the setting of the clutch mechanism can prevent the motor of the multi-function machine 1 from being damaged due to excessive load during operation, the multi-function machine 1 can be miniaturized, that is, there is no need to worry about the situation where the motor output shaft 22 is too small in diameter and cannot withstand a large load; it is easy to understand that the above-mentioned miniaturized multi-function machine 1 is only for illustration, and is intended to emphasize that the multi-function machine 1 of the present invention has an overload protection effect. Under actual working conditions, the specifications of the multi-function machine 1 should be determined according to the specific working conditions. Multi-function machines 1 with larger specifications are also within the protection scope of the present invention.

[0047] It is easy to understand that the cutting portion 521 can be a sawtooth.

[0048] Moreover, if Figure 3 As shown, the motor assembly 20 may further include a connecting shaft 23 extending along the first direction, and the motor output shaft 22 is connected to the eccentric transmission member 30 via the connecting shaft 23 to facilitate the eccentric setting of the eccentric shaft relative to the axis of the motor output shaft 22.

[0049] In addition, it should be noted that the core purpose of the present invention is to be able to cut off the rigid connection between the cutting piece 50 and the motor output shaft 22. Normally, the clutch mechanism will be arranged between the power output shaft 42 and the motor output shaft 22; the reason why this embodiment does not make such a limitation, but proposes the concept of a power transmission assembly, and limits the position of the clutch mechanism to between the cutting part 521 and the motor output shaft 22, is because if the cutting piece 50 itself has a clutch mechanism (for example, a clutch mechanism is arranged between the cutting part 521 and the end where the cutting piece 50 and the power output shaft 42 are connected), it can eventually achieve the switching between the rigid connection and the non-rigid connection between the cutting piece 50 and the motor output shaft 22; therefore, this embodiment does not limit the specific position of the clutch mechanism. As long as the clutch mechanism is arranged in the power transmission assembly and the clutch mechanism is located between the cutting part 521 and the motor output shaft 22, it should be covered within the protection scope of the present invention.

[0050] like Figure 6As shown, according to an optional embodiment of the present invention, the swing assembly 40 also includes a connecting member 41, which extends along a first direction, and the two ends of the connecting member 41 in the first direction are respectively a first connecting end 411 and a second connecting end 412, the first connecting end 411 is connected to the power output shaft 42, and the second connecting end 412 is connected to the eccentric transmission member 30.

[0051] In this embodiment, the eccentric transmission member 30 is connected to the power output shaft 42 through the connecting member 41 to realize power transmission in the power transmission assembly; since the clutch mechanism is arranged between the cutting portion 521 of the cutting member 50 and the motor output shaft 22 in the power transmission assembly, and can switch the power transmission assembly from a normal working state to an overload protection state; then, if the clutch mechanism is arranged between the three structures of the eccentric transmission member 30, the connecting member 41 and the power output shaft 42, it is easy to understand that when the rigid connection between any two of the three structures of the eccentric transmission member 30, the connecting member 41 and the power output shaft 42 is released, the power transmission assembly can be switched from a normal working state to an overload protection state.

[0052] The specific structure of the clutch mechanism is illustrated below:

[0053] refer to Figures 4 to 6 According to an optional embodiment of the present invention, the power output shaft 42 includes a shaft body 421 extending along the second direction and a protrusion 422 protruding from the outer wall of the shaft body 421, the protrusion 422 is arranged around the circumference of the shaft body 421, and the protrusion 422 is provided with a protruding gear ring 4221; the first connecting end 411 is sleeved on the outer wall of the shaft body 421, the first connecting end 411 is provided with a connecting gear ring 4111, and the connecting gear ring 4111 and the protruding gear ring 4221 are spaced apart along the second direction; when the power transmission component is in a normal working state, the connecting gear ring 4111 is meshed with the protruding gear ring 4221; when the power transmission component is in an overload protection state, the connecting gear ring 4111 is separated from the protruding gear ring 4221. The power output shaft 42 also includes a first clutch spring 423. The first clutch spring 423, the protruding ring gear 4221 and the connecting ring gear 4111 are arranged in sequence along the second direction. The first clutch spring 423, the protruding ring gear 4221 and the connecting ring gear 4111 constitute a clutch mechanism; the first clutch spring 423 is sleeved on the outer wall of the shaft body 421 and can be retracted and retracted along the second direction. Along the second direction, one end of the first clutch spring 423 close to the connecting ring gear 4111 is connected to the first connecting end 411, and one end of the first clutch spring 423 away from the connecting ring gear 4111 is connected to the shaft body 421.

[0054] It is easy to understand that, in order to facilitate the fixation of the two ends of the first clutch spring 423, along the second direction, the upper end of the first clutch spring 423 can be fixedly connected to the shaft body 421 (for example, bonded), and the lower end of the first clutch spring 423 can be abutted against the first connecting end 411 of the connecting member 41.

[0055] In this embodiment, when the multifunctional machine 1 is working normally, the first clutch spring 423 is in the initial state, the connecting gear ring 4111 is meshed with the protruding gear ring 4221, the power output shaft 42 is rigidly connected to the connecting member 41, so that the cutting portion 521 of the cutting member 50 can be rigidly connected to the motor output shaft 22, and the power transmission assembly is in a normal working state, so the cutting portion 521 can follow the power output shaft 42 to swing back and forth on both sides of the axis of the motor output shaft 22 to achieve cutting of the target object;

[0056] When the load transmitted by the cutting portion 521 to the motor output shaft 22 is too large, since the first connecting end 411 is sleeved on the outer wall of the shaft body 421, and the end of the first clutch spring 423 close to the connecting gear ring 4111 is connected to the first connecting end 411, and the end of the first clutch spring 423 away from the connecting gear ring 4111 is connected to the shaft body 421, as the load increases, along the second direction, the first connecting end 411 of the connecting member 41 will gradually overcome the elastic force of the first clutch spring 423 and move upward, and at this time, the first clutch spring 423 is in a compressed state. State (in the second direction, the length of the first spring in the compressed state is less than the length in the initial state), the connecting ring gear 4111 gradually disengages from the protruding ring gear 4221 to release the rigid connection between the power output shaft 42 and the connecting member 41, thereby releasing the rigid connection between the cutting portion 521 of the cutting member 50 and the motor output shaft 22. At this time, the power transmission assembly switches to the overload protection state, thereby preventing the motor assembly 20 from being damaged due to excessive load during operation of the multi-function machine 1, thereby ensuring the overall service life of the multi-function machine 1.

[0057] Continue to refer Figures 4 to 6 Specifically, according to an optional embodiment of the present invention, the first connecting end 411 has a connecting hole 4112 for being sleeved on the outer wall of the shaft body 421, and an abutment platform 41121 is provided in the connecting hole 4112, and the abutment platform 41121 is circumferentially arranged around the inner wall of the connecting hole 4112. Along the second direction, one end of the first clutch spring 423 close to the connecting gear ring 4111 abuts against the abutment platform 41121.

[0058] In this embodiment, it is easy to understand that the purpose of setting the connection hole 4112 is to enable the first connection end 411 to be sleeved on the outer wall of the shaft body 421;

[0059] In addition, as mentioned above, since the lower end of the first clutch spring 423 can abut against the first connecting end 411 of the connecting member 41 along the second direction; therefore, in this embodiment, a circle of abutment platform 41121 is set in the connecting hole 4112 of the first connecting end 411, so that the first connecting end 411 of the connecting member 41 can abut against the first clutch spring 423 more stably.

[0060] Figure 7 A schematic diagram of the matching relationship between the connecting member and the eccentric transmission member in the multifunctional machine provided by an embodiment of the present invention; Figure 8 A cross-sectional view of the matching relationship between the connecting member and the eccentric transmission member in the multi-function machine provided by the embodiment of the present invention; Figures 1 to 8 According to an optional embodiment of the present invention, the second connecting end 412 includes two clamping assemblies 4121 spaced apart along the third direction, and a clamping space a for clamping the eccentric transmission member 30 is provided between the two clamping assemblies 4121 along the third direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction, and the eccentric transmission member 30 and the two clamping assemblies 4121 constitute a clutch mechanism; the clamping assembly 4121 includes a clamping member 41211 and a second clutch spring 41212, and the second clutch spring 41212 can be extended and retracted along the third direction; in any clamping assembly 4121, along the third direction, one end of the second clutch spring 41212 is connected to the clamping member 41211, and the other end of the second clutch spring 41212 is connected to the outer wall of the eccentric transmission member 30; when the power transmission assembly is in normal working condition, the length of the two second clutch springs 41212 in the third direction remains unchanged; when the power transmission assembly is in overload protection state, the two second clutch springs 41212 can reciprocate and retract along the third direction.

[0061] In this embodiment, when the multifunctional machine 1 is working normally, the second clutch spring 41212 is in the initial state, that is, the eccentric transmission member 30 cannot overcome the elastic force of the second spring when swinging, and the lengths of the two second clutch springs 41212 in the third direction remain unchanged. At this time, it can be regarded that the eccentric transmission member 30 is rigidly connected to the second connecting end 412, so that the cutting portion 521 of the cutting member 50 can be rigidly connected to the motor output shaft 22, and the power transmission component is in a normal working state, so the cutting portion 521 can follow the power output shaft 42 and swing back and forth on both sides of the axis of the motor output shaft 22 to achieve cutting of the target object;

[0062] When the load transmitted by the cutting part 521 to the motor output shaft 22 is too large, the eccentric transmission part 30 will overcome the elastic force of the second clutch spring 41212 when swinging, that is, the two second clutch springs 41212 will alternately extend and retract along the third direction with the swing of the eccentric transmission part 30; that is, at this time, the eccentric transmission part 30 and the second end of the connecting part 41 are in elastic connection (that is, the rigid connection is released), thereby releasing the rigid connection between the cutting part 521 of the cutting part 50 and the motor output shaft 22, and the power transmission component is switched to the overload protection state at this time, thereby preventing the motor component 20 from being damaged due to excessive load during operation of the multi-function machine 1, thereby ensuring the overall service life of the multi-function machine 1.

[0063] like Figure 6 and Figure 8 As shown, specifically, according to an optional embodiment of the present invention, in any clamping assembly 4121, the clamping member 41211 is provided with a mounting hole 412111 for mounting a second clutch spring 41212, and the mounting hole 412111 extends along a third direction, and when the power transmission assembly is in normal working state, one end of the second clutch spring 41212 is located outside the mounting hole 412111.

[0064] In this embodiment, in order to facilitate the installation of the second clutch spring 41212, a mounting hole 412111 extending along the third direction is provided on the clamping member 41211, and the mounting hole 412111 can also play a guiding role for the second clutch spring 41212 when it is extended and retracted;

[0065] In addition, since the two second clutch springs 41212 need to be able to reciprocate and extend along the third direction when the power transmission component is in the overload protection state, the second clutch springs 41212 need to be able to have a space that is sufficiently compressed when the power transmission component is in the normal working state. Therefore, in this embodiment, the second clutch spring 41212 is configured so that when the power transmission component is in the normal working state, one end of the second clutch spring 41212 is located outside the mounting hole 412111 (that is, the end of the second spring used to abut against the eccentric transmission member 30 protrudes out of the mounting hole 412111), so as to facilitate the two second clutch springs 41212 to be able to reciprocate and extend along the third direction when the power transmission component is in the overload protection state, thereby ultimately achieving the release of the rigid connection between the cutting portion 521 of the cutting member 50 and the motor output shaft 22.

[0066] Among them, it is easy to understand that the connecting member 41 can be a shift fork, and the above-mentioned two clutch mechanisms (one clutch mechanism includes: a first clutch spring 423, a protruding gear ring 4221 and a connecting gear ring 4111, and for the convenience of description, the clutch mechanism is referred to as the first mechanism hereinafter. The other clutch mechanism includes: an eccentric transmission member 30 and a clamping assembly 4121; for the convenience of description, the clutch mechanism is referred to as the second mechanism hereinafter) are only a more convenient solution arranged according to the structure of the connecting member 41, taking the swing assembly 40 including the connecting member 41 as an example; under actual working conditions, the type of clutch mechanism, the clutch mode and the setting position of the clutch mechanism are not limited, and it is sufficient to switch the power transmission assembly between the normal working state and the overload protection state according to the size of the load transmitted by the cutting portion 521 to the motor output shaft 22, and the specific situation can be determined according to the working conditions.

[0067] In addition, for a multi-function machine 1, either the first mechanism or the second mechanism mentioned above can be selected as the clutch mechanism of the multi-function machine 1; or, the first mechanism and the second mechanism mentioned above can be set in the same multi-function machine 1 to further ensure that the clutch mechanism can provide overload protection for the multi-function machine 1; similarly to the above, the type of clutch mechanism and the number of clutch mechanisms set in a multi-function machine 1 should be determined according to the actual working conditions and are not specifically restricted.

[0068] like Figures 1 to 3 As shown, according to an optional embodiment of the present invention, the cutting piece 50 includes a first piece 51 and a second piece 52 connected to the first piece 51, the first piece 51 is connected to the power output shaft 42, the second piece 52 is located outside the shell 10, and the cutting portion 521 is located at one end of the second piece 52 away from the first piece 51.

[0069] In this embodiment, the assembly method of the cutting member 50 is described in detail by taking a case as an example:

[0070] First, it is easy to understand that in order to facilitate the assembly and disassembly of the cutting member 50, the cutting member 50 is preferably detachably connected to the power output shaft 42;

[0071] Therefore, the power output shaft 42 can be set as a hollow shaft, and the clamping bolt passes through the power output shaft 42 and the housing 10 from top to bottom along the second direction (that is, the head 71 of the clamping bolt is at the bottom and the rod 72 is at the top), and then the clamping bolt is fixed at the upper end of the housing 10 by the clamping nut 81; and the first piece 51 of the cutting piece 50 can be clamped between the lower end of the power output shaft 42 and the head 71 of the clamping bolt, as shown in FIG. Figure 3 As shown, a detachable connection of the cutting member 50 is achieved.

[0072] Continue to refer Figure 2 and Figure 3 Specifically, the power output shaft 42 may further include a clamping portion 424, which is sleeved on the outer wall of the shaft body 421 and located at the lower end of the shaft body 421. During assembly, the first piece 51 of the cutting piece 50 may be clamped between the clamping portion 424 and the head 71 of the clamping bolt.

[0073] In addition, if Figure 3 As shown, a limiting clamping spring 82 may be clamped on the outer side of the uppermost end of the rod portion 72 of the clamping bolt to further ensure the stability of the assembly.

[0074] like Figure 2 and Figure 3 As shown, according to an optional embodiment of the present invention, the multifunction machine 1 also includes a battery 60 , which is located in the inner cavity 11 , and the battery 60 is used to power the motor assembly 20 .

[0075] In this embodiment, specifically, the multi-function machine 1 can also be equipped with a control component 91 and a power switch 92. The power switch 92 is used to control the opening and closing of the motor component 20, and the control component 91 is used to control the rotation speed of the motor output shaft 22 to further improve the working efficiency of the multi-function machine 1.

[0076] According to an optional embodiment of the present invention, the battery 60 is provided with a charging interface 61 , and the housing 10 is provided with a charging hole 12 corresponding to the charging interface 61 .

[0077] In this embodiment, it is easy to understand that when the battery 60 is exhausted, in order to ensure the functionality of the multifunction machine 1, the battery 60 needs to be replaced or charged;

[0078] Therefore, in this embodiment, a charging interface 61 is provided, and a charging hole 12 corresponding to the charging interface 61 is provided on the housing 10 to improve the efficiency of charging the battery 60;

[0079] In addition, it should be noted that the shell 10 can also be set as a detachable structure. Under actual working conditions, when the battery 60 is exhausted, the operator can choose to disassemble the shell 10 and replace the battery 60 or directly charge the battery 60 to further improve convenience.

[0080] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A multifunctional machine, characterized in that: include: a housing having an inner cavity; A motor assembly is located in the inner cavity, the motor assembly includes a motor body and a motor output shaft that can rotate around its own axis, and the motor output shaft extends along a first direction; An eccentric transmission member is located in the inner cavity, the eccentric transmission member is connected to the motor output shaft, and the eccentric transmission member is eccentrically arranged relative to the axis of the motor output shaft; A swing assembly, comprising a power output shaft, the power output shaft extending along a second direction and connected to the eccentric transmission member, the second direction being perpendicular to the first direction, the power output shaft being configured to swing back and forth on both sides of the axis of the motor output shaft driven by the motor output shaft and the eccentric transmission member; as well as A cutting member, fixedly connected to the power output shaft, wherein the cutting member has a cutting portion, and the cutting portion is located outside the housing; Among them, the motor output shaft, the eccentric transmission member, the power output shaft and the cutting member together constitute a power transmission component, and in the power transmission component, a clutch mechanism is also provided between the cutting portion of the cutting member and the motor output shaft; the power transmission component has a normal working state and an overload protection state. When the power transmission component is in the normal working state, the cutting portion of the cutting member is rigidly connected to the motor output shaft, and when the power transmission component is in the overload protection state, the rigid connection between the cutting portion of the cutting member and the motor output shaft is released, and the clutch mechanism is configured to enable the power transmission component to switch between the normal working state and the overload protection state according to the size of the load transmitted by the cutting portion to the motor output shaft.

2. The multifunctional machine according to claim 1, characterized in that: The swing assembly also includes a connecting member, which extends along the first direction. The two ends of the connecting member in the first direction are respectively a first connecting end and a second connecting end. The first connecting end is connected to the power output shaft, and the second connecting end is connected to the eccentric transmission member.

3. The multifunctional machine according to claim 2, characterized in that: The power output shaft comprises a shaft body extending along the second direction and a protruding portion protruding from an outer wall of the shaft body, the protruding portion is arranged around the circumference of the shaft body, and the protruding portion is provided with a protruding gear ring; The first connecting end is sleeved on the outer wall of the shaft body, the first connecting end is provided with a connecting gear ring, and the connecting gear ring and the protruding gear ring are spaced apart along the second direction; When the power transmission assembly is in the normal working state, the connecting gear ring is meshed with the protruding gear ring; When the power transmission assembly is in the overload protection state, the connecting gear ring is separated from the protruding gear ring.

4. The multifunctional machine according to claim 3, characterized in that: The power output shaft further includes a first clutch spring, wherein the first clutch spring, the protruding gear ring and the connecting gear ring are arranged in sequence along the second direction, and the first clutch spring, the protruding gear ring and the connecting gear ring constitute the clutch mechanism; The first clutch spring is sleeved on the outer wall of the shaft body and can be extended and retracted along the second direction. Along the second direction, one end of the first clutch spring close to the connecting gear ring is connected to the first connecting end, and one end of the first clutch spring away from the connecting gear ring is connected to the shaft body.

5. The multifunctional machine according to claim 4, characterized in that: The first connecting end has a connecting hole for being sleeved on the outer wall of the shaft body, and an abutment platform is provided in the connecting hole. The abutment platform is arranged circumferentially around the inner wall of the connecting hole. Along the second direction, one end of the first clutch spring close to the connecting gear ring abuts against the abutment platform.

6. The multifunctional machine according to claim 2, characterized in that: The second connecting end includes two clamping assemblies spaced apart along a third direction, and a clamping space for clamping the eccentric transmission member is provided between the two clamping assemblies along the third direction. The third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction. The eccentric transmission member and the two clamping assemblies constitute the clutch mechanism. The clamping assembly includes a clamping member and a second clutch spring, and the second clutch spring can be extended and retracted along the third direction; in any of the clamping assemblies, along the third direction, one end of the second clutch spring is connected to the clamping member, and the other end of the second clutch spring is connected to the outer wall of the eccentric transmission member; When the power transmission assembly is in the normal working state, the lengths of the two second clutch springs in the third direction remain unchanged; When the power transmission assembly is in the overload protection state, both of the second clutch springs can reciprocate and extend along the third direction.

7. The multifunctional machine according to claim 6, characterized in that: In any of the clamping assemblies, the clamping member is provided with a mounting hole for mounting the second clutch spring, the mounting hole extends along the third direction, and when the power transmission assembly is in the normal working state, one end of the second clutch spring is located outside the mounting hole.

8. The multifunctional machine according to claim 1, characterized in that: The cutting member comprises a first member and a second member connected to the first member, the first member is connected to the power output shaft, the second member is located outside the housing, and the cutting portion is located at an end of the second member away from the first member.

9. The multifunctional machine according to any one of claims 1 to 8, characterized in that: The multifunctional machine further comprises a battery, which is located in the inner cavity and is used to supply power to the motor assembly.

10. The multifunctional machine according to claim 9, characterized in that: The battery is provided with a charging interface, and the shell is provided with a charging hole corresponding to the charging interface.

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